Save money and spare your child from a trip to the doctor with this EarCheck ear infection diagnosis kit. Just stick it in, press the button, and you'll be able to diagnose on a scale of 1 to 5 whether or not your kid's in any danger.

The LCD also gives you a reading that says either "Consult Doctor", "Monitor", or "Fluid Unlikely". Then again, you could always just use an Ear Scope GXL to see for yourself what's going on in there. – Jason Chen